Matches 51 - 100 out of 216 < 1 2 3 4 5 >


Match Document Document Title
8614557 Control of an electric machine  
A method of controlling an electric machine that includes sequentially exciting and freewheeling a winding of the electric machine. The winding is excited in advance of zero-crossings of back emf...
8610388 Control apparatus and control method for electric rotating machine  
A controller outputting voltage instructions for drive control of an electric rotating machine adds, by using adders, position estimation voltage instructions for estimating the rotor position...
8610386 Brushless motor drive circuit and brushless motor drive system  
A brushless motor drive circuit has a first AD converter which converts a voltage value depending upon a power supply voltage supplied from a power supply to drive a three-phase brushless motor,...
8604729 Control of a permanent-magnet motor  
A method of controlling a permanent-magnet motor that includes sequentially exciting and freewheeling a winding of the motor. The method includes varying the angle over which the winding is...
8598825 Lead angle control circuit, and motor drive device and motor drive system using the lead angle control circuit  
According to an embodiment, a lead angle control circuit is configured to control a lead angle of a motor drive signal driving a motor. The lead angle control circuit includes a control signal...
8593086 System and method including feed-forward control of a brushless synchronous motor  
A drive system, such as for a fluid jet cutting system, includes a brushless synchronous motor configured to drive movement through a loosely coupled transmission, a sensor configured to sense...
8583265 Methods, systems and apparatus for computing a voltage advance used in controlling operation of an electric machine  
Embodiments of the present disclosure relate to methods, systems and apparatus for computing a voltage advance used in controlling operation of an electric machine.
8581532 Control method for frequency converter  
A motor drive and a method in connection with a motor drive including a frequency converter are provided. The motor of the drive is connected to a load, and the motor is controlled with the...
8581531 Power converter device  
An electric power converting apparatus includes a switching circuit, a PWM controller, conducting PWM all phase shut-off and zero-vector outputting, a unit configured to detect or estimate current...
8564229 Device and method for controlling motor  
A motor controlling device is provided that controls a brushless motor having a plurality of phases based on magnetic pole signals output by a plurality of magnetic pole signal output sections...
8558488 Vibration-type motor controller and optical apparatus  
A vibration-type motor controller controls a driving speed of a vibration-type motor relatively moving a vibrating body in which a vibration is excited by an electromechanical energy conversion...
8547049 DC motor assembly with step adjusting control arrangement  
A DC motor assembly includes a motorized unit for generating a rotatable power at an output shaft, and a step adjusting control arrangement including an optical grating and a photocoupler. The...
8536812 Motor control device and electrical equipment with motor controlled thereby  
A motor control device includes a current detecting unit detecting current flowing into a motor winding, a speed/electrical angle estimating unit estimating a rotational speed and an electrical...
8531141 System for calibrating an electrical control system  
A method calibrates a current sensing instant to latch a current value from a set of current signals. A current command including a magnitude at a Gamma angle is provided to control a motor when...
8531143 Permanent magnet motor with stator-based saliency for position sensorless drive  
A permanent magnet motor for position sensorless drive operation provides a stator design that exhibits a saliency (machine asymmetric) functionally dependent on rotor position as caused by...
8525460 Architecture for robust force and impedance control of series elastic actuators  
An SEA architecture for controlling the torque applied by an SEA that has particular application for controlling the position of a robot link. The SEA architecture includes a motor coupled to one...
8525455 Motor actuation control device  
A triangle wave generator (4) measures the phase difference between a triangle wave (CA) and the rotor electrical angle (θm) during a first cycle in which the rotation rate of a rotor (7) is...
8519649 Control device of a synchronous motor  
A control device of a synchronous machine is disclosed. The control device includes an inverter configured to provide an output current to a synchronous machine. A controller configured to control...
8508163 Operating device preferably for machines for controlling and inspecting containers and/or their contents, and corresponding machine  
The invention is an operating device including an apparatus suited to move a support with an alternating motion around an axis. The apparatus includes one or more permanent magnets arranged along...
8508178 Torque based electronic pulse width modulation control system for a switched reluctance motor  
Methods and systems of accelerating a brushless, DC electric motor based on torque may include determining a slope based on a maximum torque of the BLDC motor at a lower operating load and a...
8502426 Rotary single-phase electromagnetic servo actuator comprising an actuator and a position sensor  
A single phase electromagnetic servo-actuator that includes a rotary actuator which moves a mobile member along a limited travel including a 2N ferromagnetic pole stator structure and at least one...
8487564 Brushless motor controller and method for controlling brushless motor  
A brushless motor controller is disclosed. The brushless motor controller includes a control unit and a drive timing generation unit. The control unit detects a load state of the motor. The drive...
8487569 Control of an electric machine  
A method of controlling an electric machine that includes exciting a winding of the electric machine in advance of zero-crossings of back emf by a fixed advance time over a range of speeds....
8487579 Determination of the position of a component  
A method for determining the position of a component, that is able to be moved into at least two end positions with the aid of a drive, especially of a flap for controlling fluid flows in an...
8487570 Method and device for operating an electric drive with the aid of a phase angle control  
The invention relates to a method for operating an electric motor (2) having a phase angle control with the following steps: Applying an AC voltage to a series connection of the electric motor (2)...
8487565 Control of an electrical machine  
A method of controlling an electrical machine that includes commutating a phase winding of the electrical machine at a time T_COM(1) after a first edge and at a time T_COM(2) after a second edge...
8476852 Controller for a brushless motor  
A controller for a brushless motor that includes a processor, a first timer, a second timer, a compare register, a comparator, an input, and one or more outputs. The processor starts the first...
8466645 Motor control circuit  
A motor control circuit for a motor is provided. The motor control circuit drives the motor based on torque command data. The torque command data is output by adding speed error data output from a...
8456114 Motor bus voltage commutation method  
A drive system for a motor has a switching network for supplying three phases of power to a motor, and a control for the switching network. The control is programmed to provide a commutation with...
8450958 Motor control method, motor control device, fan device, compressor, and pump device  
Triggered by a position detection sensor detecting that a rotor is positioned at any one of K predetermined electrical angles, for example, 60°, 180°, and 300°, a voltage vector to be given to a...
8427089 Motor driving device  
A motor driving device driving coil terminals of a three-phase motor to flow three-phase currents includes: a pulse modulator generating three-phase modulation pulses, each of which has a duty...
8400086 Initial rotor position detection for permanent magnet synchronous motors  
An apparatus and method for use with a PMSM detect the fall time or the rise time and the fall time of a motor current in the PMSM under different voltage vectors when the PMSM is in start-up to...
8395337 Brushless motor device and control device  
A brushless motor device switches between a 120-degree energization method and a 180-degree energization method of advancing an electrical angle by 30 degrees to drive a brushless motor 1...
8384321 Motor, apparatus for controlling motor, and method for starting motor  
When it is determined that a rotor is initially in a stationary state, a current vector is applied to a coil by a vector control method so as to rotate the rotor in a forward direction from a...
8382701 Method for ensuring constant speed of a motor in an injection device  
The present invention relates to a method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor being adapted to move a piston rod in an...
8362727 Control device for synchronous motor  
A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system...
8350508 Control system for an electric machine  
A control system for an electric machine, the control system including a position sensor and a drive controller. The drive controller generates one or more control signals for exciting a winding...
8350505 Method for ascertaining a correction value for the angle of the rotor of an electrically commuted reversible synchronous motor  
An electrically commuted reversible synchronous motor is activated in a calibration journey using an externally forced rotating field, during which an electrical angle of a rotating field and a...
8324849 Motor control apparatus and control method thereof  
A motor control apparatus includes a sensing module, a phase modulating module, a duty cycle modulating module and a driving module. The sensing module detects a motor to generate a sensing...
8310190 Apparatus and method for detecting lock error in sensorless motor  
An apparatus and a method for detecting a lock error in a sensorless motor are disclosed, where the apparatus includes a multiplexer, a negative booster, a comparator and a timer. The multiplexer...
8294396 Compact FPGA-based digital motor controller  
A compact field programmable gate array (FPGA)-based digital motor controller (102), a method, and a design structure are provided. The compact FPGA-based digital motor controller (102) includes a...
8274248 Rotation speed detection circuit and motor driver apparatus having the same  
A rotation speed detection circuit includes an internal clock generation portion which receives an input of a period signal whose period varies in accordance with rotation speed of a motor and...
8269441 Motor control apparatus  
A motor control apparatus includes a current control unit which is configured to calculate dq-axis voltage commands to match d-axis and q-axis current commands with d-axis and q-axis currents of a...
8269440 Motor speed control system and method without pulse-width modulation  
A motor control system includes a power control module and a detection module. The power control module controls power applied to first and second stator coils of a motor to rotate a rotor. The...
8222777 Rotary single-phase electromagnetic servo actuator comprising an actuator and a position sensor  
The invention concerns a rotary single-phase electromagnetic servo actuator consisting of a rotary actuator designed to move a mobile member along a limited travel, including a 2N pole stator...
8217603 Apparatus and method for driving rotary machine  
A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss...
8197220 Driving control apparatus and method for linear compressor  
An apparatus for controlling an operation of a reciprocating compressor, includes: a control unit for detecting a current pushed amount of a piston when a TDC is detected as an inflection point of...
8174226 Current limit control method of DC motor and related device and circuit  
A control method of a current limit of a DC motor includes generating a reference voltage according to a preset current limit value of a DC motor; comparing the reference voltage with the voltage...
8169171 Drive apparatus  
A drive apparatus includes a magnet rotor, a stator having a coil, a position detector configured to detect a position of the magnet rotor, a lead angle circuit configured to output a signal...
8164287 Motor drive control apparatus and method  
In application of a square wave voltage to a motor MG2 to make the motor MG2 output a torque equivalent to a torque command Tm2*, the procedure of square wave control corrects reference phases ψb...

Matches 51 - 100 out of 216 < 1 2 3 4 5 >